A slurry replenishment system for a heat medium furnace based on automatic control

Abstract

The present invention discloses a slurry replenishment system for a heat medium furnace based on automatic control, which includes a combustion chamber, pipelines, a transmission device, and a heating device. The transmission device is sequentially distributed and includes a coal slurry tank, a coal slurry pump, a filter, and a slurry storage tank connected by the pipelines. The slurry storage tank is connected to the combustion chamber. The heating device includes a blower and a heat exchanger. The air outlet of the blower is communicated with the air inlet of the heat exchanger through the pipeline, and the air outlet of the heat exchanger is communicated with the air inlet of the combustion chamber through the pipeline. By setting a liquid sensor and a temperature sensor, the combustion efficiency in the combustion chamber can be known. When the coal slurry is insufficient, the coal slurry pump can be started to transfer the coal slurry into the combustion chamber. The setting of the temperature sensor can adjust the air damper when the temperature is insufficient, thereby increasing the air output of the blower and further improving the combustion effect of the combustion chamber, facilitating the use of the heat medium furnace.

Description

Technical Field

[0001] The present invention relates to the technical field of slurry replenishment systems, and specifically to a heat medium furnace slurry replenishment system based on automatic control. Background Art

[0002] A heat medium boiler generally performs combustion control by exchanging heat with combustion gas generated by the combustion of fossil fuels, so that the temperature of the heat medium oil circulating between the load side and the heat medium boiler is generally maintained at a specified temperature. However, currently, manual slurry replenishment treatment is required when the heat medium furnace burns, which increases the labor intensity of personnel. Moreover, a large number of pipelines are used in the slurry replenishment system, and the pipelines are prone to aging after long-term use. The connection and placement of the pipelines are achieved through the cooperation between bolts and nuts, which makes it time-consuming and laborious to maintain the pipelines when necessary. Summary of the Invention

[0003] The object of the present invention is to provide a slurry replenishment system for a heat medium furnace based on automatic control to solve the problems raised in the above-mentioned background technology. To achieve the above object, the present invention provides the following technical solution: A slurry replenishment system for a heat medium furnace based on automatic control includes a combustion chamber, a pipeline, a transmission device, and a heating device. The transmission device is sequentially distributed and connected to a coal slurry tank, a coal slurry pump, a filter, and a slurry storage tank through the pipeline. The slurry storage tank is connected to the combustion chamber. The heating device includes a blower and a heat exchanger. The air outlet of the blower and the air inlet of the heat exchanger are connected through the pipeline. The air outlet of the heat exchanger and the air inlet of the combustion chamber are connected through the pipeline. The air outlet of the combustion chamber and the air inlet of the heat exchanger are connected through the pipeline. The exhaust outlet of the heat exchanger is connected to a chimney through the pipeline. A liquid sensor and a temperature sensor are arranged inside the combustion chamber. Preferably, a first solenoid valve is arranged between the coal slurry pump and the filter, a second solenoid valve is arranged between the slurry storage tank and the combustion chamber, and a regulating damper is arranged between the hot air blower and the heat exchanger. Preferably, the pipeline includes: a plurality of first pipe bodies and a plurality of second pipe bodies. First flange plates and second flange plates are respectively connected to both ends of the first pipe body and the second pipe body. The first flange plate and the second flange plate are closely attached. A straight groove is opened on one side of the first flange plate. A positioning rod is elastically fitted in the parallel direction of the straight groove. A notch adapted to the positioning rod is opened on one side of the second flange plate. Preferably, on one side of the first pipe body and the second pipe body close to the first flange plate, a cylinder with a "T" - shaped cross - section is slidably fitted. A threaded disk is rotatably connected to the circumferential side of the outer wall of the cylinder. A plurality of connecting seats threadedly engaged with the threaded disk are slidably fitted above the cylinder. The connecting seats are located between the first flange plate and the second flange plate. Preferably, a first planar thread is arranged on one side of the threaded disk, and a second planar thread threadedly engaged with the first planar thread is arranged on one side of the connecting seat. Preferably, a chute is opened on one side of the straight groove. A push rod is elastically fitted in the parallel direction of the chute. One end of the push rod is connected to a push block. The side of the push block facing the positioning rod is a slope. A cylinder is connected to one side of the positioning rod. The slope is attached to the surface of the cylinder. The other end of the push rod is attached to the inner wall of the connecting seat. Preferably, a ring body is connected to the inner wall of the threaded disk. A first annular groove adapted to the ring body is opened on the circumferential side of the outer wall of the cylinder. A positioning block is connected to one side of the inner wall of the cylinder. A positioning groove for the positioning block to slide is opened in the length direction of the outer wall of the first pipe body. The positioning block is magnetically fitted in the parallel direction of the positioning groove. Preferably, friction lines are connected to the circumferential side of the outer wall of the threaded disk.Preferably, a sealing ring is provided on one side of the first flange, and a second annular groove adapted to the sealing ring is provided on one side of the second flange. Compared with the prior art, the beneficial effects of the present invention are as follows:

[0004] 1. By providing the liquid sensor and the temperature sensor, the combustion efficiency in the combustion chamber can be known. When the coal slurry is insufficient, the coal slurry pump can be turned on to transfer the coal slurry into the combustion chamber. The temperature sensor can adjust the air damper when the temperature is insufficient, thereby increasing the air output of the blower, and then improving the combustion effect in the combustion chamber, which facilitates the use of the hot medium furnace. 2. By providing the first flange and the second flange, they can be fitted and connected, and the combination of the first flange and the second flange can be completed by the cooperation of the threaded disc and the connecting seat. This method of maintenance does not require the use of tools, and during the installation process, it is not necessary to remove all pipelines. One pipeline can be selected for disassembly separately, which is convenient for personnel to use, has a faster disassembly and assembly speed, and is convenient for pipeline maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 It is a schematic diagram of the slurry replenishment system of the present invention;

[0006] Figure 2 It is a three-dimensional structure schematic diagram of the combination of the first pipe body and the second pipe body of the present invention;

[0007] Figure 3 It is a three-dimensional structure schematic diagram of the interior of the combination of the first pipe body and the second pipe body of the present invention; Figure 4 For the present invention Figure 3 The enlarged view at A in the figure. In the figure: 1. Combustion chamber; 2. Pipeline; 3. Coal slurry tank; 4. Coal slurry pump; 5. Filter; 6. Slurry storage tank; 7. Blower; 8. Heat exchanger; 9. Chimney; 10. Liquid sensor; 11. Temperature sensor; 12. First solenoid valve; 13. Second solenoid valve; 14. Air damper; 201. First pipe body; 202. Second pipe body; 203. First flange; 204. Second flange; 205. Straight groove; 206. Positioning rod; 207. Notch; 208. Cylinder body; 209. Threaded disc; 210. Connecting seat; 211. Slide groove; 212. Push rod; 213. Push block; 214. Column body; 215. Ring body; 216. Positioning block; 217. Sealing ring. DETAILED DESCRIPTION OF THE INVENTION

[0008] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. A heat medium furnace slurry replenishment system based on automatic control includes a combustion chamber 1, a pipeline 2, a transmission device, and a heating device. The transmission device is sequentially distributed and includes a coal slurry tank 3, a coal slurry pump 4, a filter 5, and a slurry storage tank 6 connected by the pipeline 2. The slurry storage tank 6 is connected to the combustion chamber 1. The filter 5 is used to filter impurities in the coal slurry, improving the usage effect of the coal slurry. The heating device includes a blower 7 and a heat exchanger 8. The air outlet of the blower 7 and the air inlet of the heat exchanger 8 are connected by the pipeline 2. The

[0009] air outlet of the heat exchanger 8 and the air inlet of the combustion chamber 1 are connected by the pipeline 2. The air outlet of the combustion chamber 1 and the air inlet of the heat exchanger 8 are connected by the pipeline 2. The exhaust port of the heat exchanger 8 is connected to a chimney 9 by the pipeline 2. Inside the combustion chamber 1, a liquid sensor 10 and a temperature sensor 11 are provided. The liquid sensor 10 is used to detect whether the coal slurry in the combustion chamber 1 is sufficient, and the temperature sensor 11 is used to check whether the temperature of the combustion chamber 1 needs to be increased. A first solenoid valve 12 is provided between the coal slurry pump 4 and the filter 5, a second solenoid valve 13 is provided between the slurry storage tank 6 and the combustion chamber 1, and a regulating air damper 14 is provided between the hot blower 7 and the heat exchanger 8. The first solenoid valve 12 and the second solenoid valve 13 are used to control the replenishment speed of the coal slurry, and the regulating air damper 14 is used to control the air volume blown by the blower 7;

[0010] When a hot medium furnace needs to be used, first, the coal slurry pump 4 pumps out the coal slurry in the coal slurry tank 3. Subsequently, the coal slurry pump 4 transports the coal slurry to the filter 5 for filtration. Then, the filter 5 transports the coal slurry to the slurry storage tank 6. Then, the slurry storage tank 6 transports the coal slurry to the combustion chamber 1. Subsequently, the blower 7 is started, and the blower 7 transports air to the combustion chamber 1 through the heat exchanger 8. Then, the combustion effect of the combustion chamber 1 during combustion is better. Subsequently, the excess smoke and heat in the combustion chamber 1 are re-transported to the heat exchanger 8, and the excess smoke and heat are discharged from the chimney 9 through the exhaust port of the heat exchanger 8. When the coal slurry in the combustion chamber 1 is insufficient, the liquid sensor 10 and the temperature sensor 11 will send control signals to control the slurry storage tank 6 to re-transport the coal slurry. The pipeline 2 includes: multiple first pipe bodies 201 and multiple second pipe bodies 202. The first pipe bodies 201 and the second pipe bodies 202 facilitate the subsequent transportation of coal slurry and the transportation of air. Both ends of the first pipe body 201 and the second pipe body 202 are respectively connected with a first flange 203 and a second flange 204. The first flange 203 and the second flange 204 are closely fitted. A straight groove 205 is opened on one side of the first flange 203. A positioning rod 206 is elastically fitted in the parallel direction of the straight groove 205. A notch 207 adapted to the positioning rod 206 is opened on one side of the second flange 204. The setting of the positioning rod 206 prevents the first flange 203 and the second flange 204 from rotating after connection, improving the stability of the first flange 203 and the second flange 204 after connection. A second notch is provided on one side of the straight groove 205. A second protrusion that is slidably fitted in the second notch is connected to one side of the positioning rod 206. A second spring is connected between the second protrusion and the second notch. Both the first pipe body 201 and the second pipe body 202 are slidably fitted with a cylinder 208 having a "T" - shaped cross - section on the side close to the first flange 203. A threaded disk 209 is rotatably connected to the outer circumferential side of the cylinder 208. Multiple connection seats 210 that are threadedly engaged with the threaded disk 209 are slidably fitted above the cylinder 208. The connection seats 210 are located between the first flange 203 and the second flange 204. The setting of the connection seats 210 can closely fit the first flange 203 and the second flange 204 together, and the connection seats 210 can also push the push rod 212 to slide, so that the push rod 212 drives the positioning rod 206 to slide into the notch 207. A first flat thread is provided on one side of the threaded disk 209. A second flat thread that is threadedly engaged with the first flat thread is provided on one side of the connection seat 210. The self - locking property of the first flat thread and the second flat thread can improve the stability of the connection seat 210 after adjustment. A dovetail block is provided on one side of the connection seat. A dovetail groove for the dovetail block to slide is opened above the cylinder 208. The setting of the dovetail block and the dovetail groove prevents the connection seat 210 from being suspended.On one side of the straight groove 205, a sliding groove 211 is provided. A push rod 212 is elastically fitted in the parallel direction of the sliding groove 211. One end of the push rod 212 is connected with a push block 213. The side of the push block 213 facing the positioning rod 206 is a slope. One side of the positioning rod 206 is connected with a cylinder 214. The slope is attached to the surface of the cylinder 214. The other end of the push rod 212 is attached to the inner wall of the connecting seat 210. The setting of the push rod 212 can push the positioning rod 206 to move towards the side of the notch 207. A first protrusion is connected below the push rod 212. A first notch is provided on one side of the inner wall of the sliding groove 211. A first spring is connected between the first protrusion and the first notch. A ring body 215 is connected to the inner wall of the threaded disc 209. A first annular groove adapted to the ring body 215 is provided on the circumferential side of the outer wall of the cylinder body 208. A positioning block 216 is connected to one side of the inner wall of the cylinder body 208. A positioning groove for the positioning block 216 to slide is provided in the length direction of the outer wall of the first pipe body 201. The positioning block 216 is magnetically fitted in the parallel direction of the positioning groove. A magnet bar is provided on one side of the positioning groove. The positioning block 216 is of an iron block structure. The setting of the magnet can increase the damping force of the sliding of the cylinder body 208 and improve the stability of the positioning block 216. The setting of the ring body 215 and the first annular groove avoids the situation that the threaded disc 209 is suspended and improves the stability of the rotation of the threaded disc 209. Friction lines are connected to the circumferential side of the outer wall of the threaded disc 209. The setting of the friction lines facilitates the rotation of the threaded disc 209 by personnel and improves the stability of the rotation of the friction lines. A sealing ring 217 is provided on one side of the first flange 203, and a second annular groove adapted to the sealing ring 217 is provided on one side of the second flange 204. The sealing ring 217 is made of rubber. The setting of the second annular groove and the sealing ring 217 avoids the situation that the first flange 203 and the second flange 204 are insufficiently sealed and cause the leakage of coal slurry.Working principle: When the pipeline 2 needs to be repaired, first rotate the threaded disk 209 to make the connecting ring body 215 connected to the threaded disk 209 rotate in the first annular groove. Subsequently, the threaded disk 209 drives the connection to slide above the cylinder body 208 through the first planar thread and the second planar thread. Then, multiple connecting seats 210 will move simultaneously towards the side away from the second flange 204. When the connecting seats 210 unfold, the first spring will undergo elastic deformation and push the push rod to slide out of the chute 211. At the same time, the inclined block connected to the push rod 212 will cancel the extrusion of the cylinder body 214. Subsequently, the second spring will undergo elastic deformation and pop the positioning out of the notch 207. At the same time, the positioning rod 206 will slide into the straight groove 205. Then, the operator pushes the cylinder body 208 to make the positioning block 216 connected to the lower part of the cylinder body 208 slide along the positioning groove towards the side away from the second connecting seat 210. Then, the removed pipeline 2 can be taken off for maintenance. During subsequent installation, it is the same principle. This method of maintenance does not require the use of tools, and during the installation process, it is not necessary to remove all pipelines 2. One pipeline 2 can be selected for disassembly separately, which facilitates the use of personnel, has a faster disassembly and assembly speed, and is convenient for the maintenance of the pipeline 2. In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "install", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slurry replenishing system for a heat medium furnace based on automatic control, characterized in that, it includes a combustion chamber (1), a pipeline (2), a transmission device, and a heating device. The transmission device includes a coal slurry tank (3), a coal slurry pump (4), a filter (5), and a slurry storage tank (6) that are sequentially distributed and connected through the pipeline (2). The slurry storage tank (6) is connected to the combustion chamber (1). The heating device includes a blower (7) and a heat exchanger (8). The air outlet of the blower (7) is communicated with the air inlet of the heat exchanger (8) through the pipeline (2). The air outlet of the heat exchanger (8) is communicated with the air inlet of the combustion chamber (1) through the pipeline (2). The air outlet of the combustion chamber (1) is connected to the air inlet of the heat exchanger (8) through the pipeline (2). The exhaust port of the heat exchanger (8) is communicated with a chimney (9) through the pipeline (2). A liquid sensor (10) and a temperature sensor (11) are arranged inside the combustion chamber (1); a first solenoid valve (12) is arranged between the coal slurry pump (4) and the filter (5), a second solenoid valve (13) is arranged between the slurry storage tank (6) and the combustion chamber (1), and a regulating air damper (14) is arranged between the blower (7) and the heat exchanger (8); the pipeline (2) includes: a plurality of first pipe bodies (201) and a plurality of second pipe bodies (202). First flange plates (203) and second flange plates (204) are respectively connected to both ends of the first pipe body (201) and the second pipe body (202). The first flange plate (203) and the second flange plate (204) are closely attached. A straight groove (205) is opened on one side of the first flange plate (203). A positioning rod (206) is elastically fitted in the parallel direction of the straight groove (205). A notch (207) adapted to the positioning rod (206) is opened on one side of the second flange plate (204); the first pipe body (201) and the second pipe body (202) are both slidably fitted with a cylinder body (208) having a "T" - shaped cross - section on the side close to the first flange plate (203). A threaded disc (209) is rotatably connected to the outer wall circumference of the cylinder body (208). A plurality of connecting seats (210) that are threadedly engaged with the threaded disc (209) are slidably fitted above the cylinder body (208). The connecting seats (210) are located between the first flange plate (203) and the second flange plate (204); a first planar thread is arranged on one side of the threaded disc (209), and a second planar thread that is threadedly engaged with the first planar thread is arranged on one side of the connecting seat (210); On one side of the straight groove (205), a sliding groove (211) is provided. A push rod (212) is elastically engaged in the parallel direction of the sliding groove (211). One end of the push rod (212) is connected with a push block (213). The side of the push block (213) facing the positioning rod (206) is a slope. One side of the positioning rod (206) is connected with a cylinder (214). The slope is attached to the surface of the cylinder (214). The other end of the push rod (212) is attached to the inner wall of the connecting seat (210). An annular body (215) is connected to the inner wall of the threaded disc (209). A first annular groove adapted to the annular body (215) is provided on the circumferential side of the outer wall of the cylinder body (208). A positioning block (216) is connected to one side of the inner wall of the cylinder body (208). A positioning groove for the positioning block (216) to slide is provided in the length direction of the outer wall of the first pipe body (201). The positioning block (216) is magnetically engaged in the parallel direction of the positioning groove.

2. A hot medium furnace slurry replenishment system based on automatic control according to claim 1, characterized in that: Friction lines are connected to the circumferential side of the outer wall of the threaded disc (209).

3. A hot medium furnace slurry replenishment system based on automatic control according to claim 2, characterized in that: A sealing ring (217) is provided on one side of the first flange (203), and a second annular groove adapted to the sealing ring (217) is provided on one side of the second flange (204).

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